# \$100 in 1955 → \$931.17 in 2018

## Inflation Calculator

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### U.S. Inflation Rate, 1955-2018 (\$100)

According to the Bureau of Labor Statistics consumer price index, the dollar experienced an average inflation rate of 3.61% per year. Prices in 2018 are 831.2% higher than prices in 1955.

In other words, \$100 in the year 1955 is equivalent in purchasing power to \$931.17 in 2018, a difference of \$831.17 over 63 years.

Compared to last year's annual rate, the inflation rate in 2018 is now 1.95%1. If this number holds, \$100 today would be equivalent to \$101.95 next year. The current inflation rate page gives more detail on the latest official inflation rates.

 Cumulative price change 831.17% Average inflation rate 3.61% Price difference (\$100 base) \$831.17 CPI in 1955 26.8 CPI in 2018 249.554

#### Inflation rates for specific categories

Housing · Juices and nonalcoholic drinks · Film and photographic supplies · More

S&P 500 price · S&P 500 earnings · Shiller P/E

### How to calculate the inflation rate for \$100 since 1955

This inflation calculator uses the following inflation rate formula:

CPI in 2018 / CPI in 1955 * 1955 USD value = 2018 USD value

Then plug in historical CPI values. The U.S. CPI was 26.8 in the year 1955 and 249.554 in 2018:

249.554 / 26.8 * \$100 = \$931.17

\$100 in 1955 has the same "purchasing power" as \$931.17 in 2018.